Drug interactions
Diphenoxylate + Tapentadol
Severity: Moderate
Diphenoxylate and Tapentadol: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Diphenoxylate is an opioid antidiarrheal, and at higher doses it has central opioid effects. With tapentadol it may cause additive sedation and respiratory depression.
What this interaction means in plain words
Diphenoxylate and Tapentadol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Diphenoxylate belongs to Gastrointestinal Tract; Tapentadol belongs to Musculoskeletal.
Why it happens
Additive mu-opioid receptor-mediated CNS depression.
What to do
Keep diphenoxylate at the labeled dose and monitor for sedation and respiratory depression. Take particular care in older, frail or opioid-naive patients.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Tapentadol
- Calcium / magnesium / potassium / sodium oxybates + Tapentadol Contraindicated
- Isocarboxazid + Tapentadol Contraindicated
- Linezolid + Tapentadol Contraindicated
- Methylene blue + Tapentadol Contraindicated
- Olanzapine / samidorphan + Tapentadol Contraindicated
- Phenelzine + Tapentadol Contraindicated
Other interactions of Diphenoxylate
Frequently asked questions
Can I take Diphenoxylate with Tapentadol?
MediHelp rates the interaction as moderate. Diphenoxylate and Tapentadol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Diphenoxylate is an opioid antidiarrheal, and at higher doses it has central opioid effects. With tapentadol it may cause additive sedation and respiratory depression.
How serious is the interaction between Diphenoxylate and Tapentadol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Keep diphenoxylate at the labeled dose and monitor for sedation and respiratory depression. Take particular care in older, frail or opioid-naive patients.
What other medicines interact with Tapentadol?
MediHelp also lists interactions of Tapentadol with, for example, Calcium / magnesium / potassium / sodium oxybates, Isocarboxazid, Linezolid. The full list is on the Tapentadol page.
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